United StatesAverage weather for Juneau in August
It's cool to moderate in August in Juneau with an average temperature of 17°C. Temperatures this month range from a low of 15°C to a high of 21°C. At night, you can expect temperatures between 10°C and 15°C.
Start of August
The month of August starts in Juneau with mild temps, averaging around 20°C during the day and nights around 14°C. You can expect regular precipitation, but there will also be some sunny days in the early part of the month.
Mid August
By mid-August, daytime temps drop to around 17°C, with nights around 13°C. There’s a high chance of precipitation during this time. Choose a light jacket, sweater or hoodie, and long pants.
End of August
By the end of August, the average daytime temperature in Juneau is around 16°C, while nighttime temps are about 11°C. There’s a significant chance of many days with precipitation.
In August, there is an average of 242 mm of precipitation, spread over 17 days. The wind speed is around 3 Bft, mostly coming from the South.
Juneau in August |
New York | ||
|---|---|---|---|
 Average temperature |
17°C | 30°C | |
 Max. temperature |
21°C | 31°C | |
| Min. temperature |
15°C | -5°C | |
 Total precipitation |
242 mm | 79 mm | |
| Rainy days |
17 days | 13 days | |
July
UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Is August a good time to visit Juneau?
Looking for sun and warm weather? August isn’t a good month to be in Juneau. The temperatures are too low for a warm stay this month.
Temperature records
With 28°C in 2019, Juneau reached the highest temperature in August over the past 10 years. The lowest daytime temperature in this month was 10°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 5°C to a highest value of 18°C.
Check out the climate of Juneau for all months and discover the best travel time
Daily Temperature in August in Juneau
This chart shows the average daily high and low temperatures in August for Juneau, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in August in Juneau
The chart below shows the average daily precipitation in August for Juneau, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for August, you can expect about 17 days of precipitation in Juneau.
Daily UV index in August in Juneau
This chart shows the average daily UV index in August in Juneau, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in August in Juneau over the years
This chart shows the average temperature in August in Juneau, measured in degrees Celsius, over the past few years.
Total precipitation in August in Juneau over the years
This chart shows the average precipitation in August in Juneau, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in August for Juneau
Click on any day in August to get detailed info about the usual weather on that day in Juneau. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in August in Juneau
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Average weather in Juneau by month
Click on a month below to see detailed weather info for Juneau. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
